package il.ac.biu.cs.grossmm.api.keys;

import java.io.Serializable;

/**
 * A key attribute. Key attributes are usually singletons, such as enumarations,
 * however this is not a restriction: <tt>equals</tt> operation
 * is always used to compare attributes, not reference equality comparison.   
 */
public interface Attribute extends Serializable {
	
}
